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1, Overview: ALSPAMV3000 and MV1000 France ALSTOM AC Digital Frequency Control in the field of two products. Applied to cold rolled and galvanized production line transmission system showed good performance. To ensure the production process requirements to achieve a tremendous role to play, making the first product produced by the thermal load on the full compliance with quality standards and received critical acclaim and recognition experts, the paper engaged in a full line of frequency converter 77 sets of gear for debugging so on which products have some knowledge and understanding, are summarized written, hoping to work on a similar play later reference, like the article as your accumulation of experience. 2, converter features description: ALSPAMV Series AC inverter is a digital control theory and micro-processing technology combined with the product of the computer involved in control of the open / closed-loop drive system. It applied PWM control technology, the VVVF control. Device using non-controlled rectifier bridge input rectifier. PWM inverter fully controlled by the type of power electronic switching devices "IGBT" to achieve the inverter. A variety of microprocessor calculation and control logic can implement complex algorithms and computing functions. If all state observer, coordinate conversion, vector control, adaptive control. Thus greatly improving overall system performance and user flexibility. With fault protection and diagnostics as well and PC communication function, it can be by means of digital / analog signals on the system variables limiting control. Once the signal exceeds a certain limit amplitude, it can be automatically taken to interrupt treatment or protection, and fault alarm and display the information code. It supports CAN-BUS, field-bus and RS485, RS232 and other formats of remote communication. 3, process design requirements and applications: Production line has three working section, each section of work demands constant tension, both on the drive motor speed control demanding. System across the board with 8 group "S" roller are equipped with tension control and detection devices, through the HPC of the PID regulator followed by a balanced distribution of tension control, so the whole line of work roll of AC variable frequency drives have a speed sensor feedback using asynchronous motor vector control, to ensure that the work roll speed control accuracy. Order to meet the technological requirements, improve control accuracy, the commissioning of mechanical load on the transmission torque characteristic curve was debugged and tested by actual operation of the machinery used to calculate the money will be available to the HPC in order to achieve calculate the actual load torque and control, thereby increasing the system response speed and control precision. 4, ALSPA exchange digital converter debugging: 4.1 system checks: Physical school lines and insulation inspection: Check the motor and frequency converter connected between, on the installation of the accuracy and reliability of solid validation check, the electrical wiring group check wiring insulation inspections to ensure good insulation and make sure electrical conditions with the monomers. Logic school lines and logic I / O test: Transmission to the device, and the voltage polarity and the level of confirmation, confirmation input / output power supply meets the design requirements. Based design of the device to operate the logic test, P11.21 and P11.22 in the logic operation is being observed Often, respectively, P7.27, P7.28, P7.29 several digital output signal is forced to "1" output, observe the system ready signal, the main contactor and brake contactors are in working order or action , P11.21 logic output display is normal, and check the display P11.22 logic input is normal. Tests were normal, you can go to the next debug session. 4.2 M single-debug: Objective: To test whether the state motor run single normal direction of the motor is confirmed, and the implementation of vector control system, the dynamic parameters in self-test and parameter tuning. Principle: Vector control is based on the rotation of the rotor flux space vector for the reference target, using a static coordinate system to the rotating coordinate transformation between, you can stator current in the exciting current component and torque current components become separate independent scalar control respectively. In this way, through the reconstruction of the motor coordinate transformation model can be equivalent to a DC motor, which can be as fast as the DC motor torque and flux control. Parameters: This stage of the application of the main parameters are as follows: * Note: "" examples based set Methods: First part of set speed regulator open loop, that is P13.11 set to "1", close the main power in the digital output and P7.28 forced to "1", and if motor cooling fan and holds gates, will they all start, the next time you start the installation run. Operation indicator light after a given parameter P13.12 a certain frequency, the motor is running, then observe the direction of motor operation status and operation is normal. If the normal frequency for a given can continue to rise, until the rated frequency, the output current view of P9.05 show, because then no electrical load, the vector control principle, torque current component of the "q" value is small, so first ignored this current view as an exciting current component "d", to put it down, and then the encoder checks the speed feedback signal to confirm the feedback signal to normal, stop running. P13.12 parameter is set to "0" given to P13.11 parameter modification for the closed-loop, and just record the magnetic flux (excitation) current in the write P12.00. P12 parameter set for the vector control method for dynamic self-test parameter group, P12.00 for the flux current value, to just record the value of the write is to make the default value of the deviation of the actual test smaller, beneficial dynamic test carried out smoothly. At this juncture, P12.03 in the setting chosen for the "3", that is, select the dynamic self-test, then run the boot device, the system began to dynamic testing, the system control of vector control need to link the dynamic testing of several large dating run 10 to 15 minutes. Test, the device automatically stops running, then see P12.00 the previous value set will have a difference, because the system through the dynamic test, have been fixed, these parameters will be the system of Vector Control basis, they only apply to the motor drive system now. Motor if the exchange needs to re-test. 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